/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:47:37,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:47:37,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:47:37,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:47:37,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:47:37,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:47:37,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:47:37,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:47:37,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:47:37,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:47:37,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:47:37,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:47:37,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:47:37,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:47:37,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:47:37,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:47:37,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:47:37,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:47:37,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:47:37,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:47:37,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:47:37,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:47:37,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:47:37,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:47:37,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:47:37,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:47:37,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:47:37,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:47:37,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:47:37,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:47:37,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:47:37,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:47:37,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:47:37,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:47:37,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:47:37,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:47:37,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:47:37,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:47:37,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:47:37,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:47:37,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:47:37,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 14:47:37,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:47:37,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:47:37,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:47:37,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:47:37,425 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:47:37,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:47:37,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:47:37,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:47:37,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:47:37,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:47:37,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:47:37,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:47:37,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:47:37,427 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:47:37,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:47:37,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:47:37,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:47:37,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:47:37,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:47:37,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:47:37,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:47:37,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:47:37,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:47:37,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:47:37,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:47:37,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:47:37,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:47:37,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:47:37,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:47:37,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:47:37,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:47:37,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:47:37,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:47:37,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:47:37,740 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:47:37,741 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-21 14:47:37,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aa601c70/cb9f6472eaa346d09d68fdcde8943eaf/FLAG9bafbae2e [2020-08-21 14:47:38,355 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:47:38,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-21 14:47:38,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aa601c70/cb9f6472eaa346d09d68fdcde8943eaf/FLAG9bafbae2e [2020-08-21 14:47:38,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aa601c70/cb9f6472eaa346d09d68fdcde8943eaf [2020-08-21 14:47:38,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:47:38,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:47:38,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:47:38,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:47:38,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:47:38,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:47:38" (1/1) ... [2020-08-21 14:47:38,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:38, skipping insertion in model container [2020-08-21 14:47:38,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:47:38" (1/1) ... [2020-08-21 14:47:38,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:47:38,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:47:39,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:47:39,184 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:47:39,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:47:39,382 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:47:39,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39 WrapperNode [2020-08-21 14:47:39,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:47:39,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:47:39,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:47:39,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:47:39,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (1/1) ... [2020-08-21 14:47:39,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (1/1) ... [2020-08-21 14:47:39,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (1/1) ... [2020-08-21 14:47:39,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (1/1) ... [2020-08-21 14:47:39,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (1/1) ... [2020-08-21 14:47:39,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (1/1) ... [2020-08-21 14:47:39,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (1/1) ... [2020-08-21 14:47:39,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:47:39,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:47:39,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:47:39,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:47:39,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:47:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:47:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:47:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:47:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:47:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:47:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:47:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:47:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:47:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:47:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:47:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:47:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:47:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:47:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:47:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:47:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:47:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:47:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:47:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:47:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:47:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:47:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:47:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:47:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:47:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 14:47:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:47:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:47:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:47:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:47:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:47:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:47:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:47:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:47:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:47:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:47:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:47:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:47:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:47:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 14:47:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:47:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:47:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:47:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:47:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:47:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:47:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:47:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:47:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:47:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:47:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:47:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:47:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:47:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:47:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:47:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:47:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:47:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:47:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:47:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:47:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:47:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:47:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:47:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:47:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:47:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:47:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 14:47:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:47:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:47:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:47:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:47:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:47:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:47:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:47:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:47:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:47:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:47:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:47:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 14:47:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:47:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:47:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:47:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:47:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:47:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:47:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:47:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:47:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:47:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:47:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:47:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:47:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:47:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:47:40,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:47:40,599 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:47:40,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:47:40 BoogieIcfgContainer [2020-08-21 14:47:40,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:47:40,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:47:40,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:47:40,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:47:40,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:47:38" (1/3) ... [2020-08-21 14:47:40,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567155c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:47:40, skipping insertion in model container [2020-08-21 14:47:40,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:39" (2/3) ... [2020-08-21 14:47:40,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567155c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:47:40, skipping insertion in model container [2020-08-21 14:47:40,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:47:40" (3/3) ... [2020-08-21 14:47:40,616 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-08-21 14:47:40,626 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:47:40,634 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:47:40,648 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:47:40,675 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:47:40,675 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:47:40,675 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:47:40,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:47:40,676 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:47:40,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:47:40,676 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:47:40,676 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:47:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 14:47:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 14:47:40,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:40,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:47:40,712 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:40,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1123456625, now seen corresponding path program 1 times [2020-08-21 14:47:40,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:40,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247912419] [2020-08-21 14:47:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:41,354 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:41,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:41,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:41,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:41,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:47:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:47:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:47:41,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247912419] [2020-08-21 14:47:41,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:41,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:47:41,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465536647] [2020-08-21 14:47:41,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:47:41,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:41,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:47:41,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:47:41,509 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-21 14:47:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:47:42,763 INFO L93 Difference]: Finished difference Result 307 states and 401 transitions. [2020-08-21 14:47:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:47:42,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 14:47:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:47:42,780 INFO L225 Difference]: With dead ends: 307 [2020-08-21 14:47:42,781 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 14:47:42,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:47:42,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 14:47:42,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2020-08-21 14:47:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 14:47:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-21 14:47:42,881 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46 [2020-08-21 14:47:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:47:42,882 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-21 14:47:42,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:47:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-21 14:47:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 14:47:42,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:42,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:47:42,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:47:42,889 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash -790150173, now seen corresponding path program 1 times [2020-08-21 14:47:42,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:42,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224070212] [2020-08-21 14:47:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:43,337 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:43,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:43,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:47:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:43,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:47:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:47:43,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224070212] [2020-08-21 14:47:43,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:43,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:47:43,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737511230] [2020-08-21 14:47:43,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:47:43,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:43,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:47:43,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:47:43,384 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 4 states. [2020-08-21 14:47:43,872 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:47:44,826 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-08-21 14:47:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:47:44,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 14:47:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:47:44,832 INFO L225 Difference]: With dead ends: 234 [2020-08-21 14:47:44,832 INFO L226 Difference]: Without dead ends: 150 [2020-08-21 14:47:44,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:47:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-21 14:47:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2020-08-21 14:47:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 14:47:44,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-21 14:47:44,875 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47 [2020-08-21 14:47:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:47:44,875 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-21 14:47:44,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:47:44,876 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-21 14:47:44,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 14:47:44,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:44,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:47:44,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:47:44,879 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:44,879 INFO L82 PathProgramCache]: Analyzing trace with hash 271076632, now seen corresponding path program 1 times [2020-08-21 14:47:44,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:44,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017904131] [2020-08-21 14:47:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:45,293 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:45,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:45,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:45,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:45,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:45,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:47:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:47:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:47:45,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017904131] [2020-08-21 14:47:45,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:45,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:47:45,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081067805] [2020-08-21 14:47:45,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:47:45,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:45,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:47:45,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:47:45,428 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 8 states. [2020-08-21 14:47:45,798 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:47:46,166 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:46,462 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:46,726 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:47,518 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:47:49,349 INFO L93 Difference]: Finished difference Result 421 states and 521 transitions. [2020-08-21 14:47:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:47:49,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 14:47:49,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:47:49,356 INFO L225 Difference]: With dead ends: 421 [2020-08-21 14:47:49,357 INFO L226 Difference]: Without dead ends: 322 [2020-08-21 14:47:49,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:47:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-21 14:47:49,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 264. [2020-08-21 14:47:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-21 14:47:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 318 transitions. [2020-08-21 14:47:49,433 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 318 transitions. Word has length 51 [2020-08-21 14:47:49,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:47:49,433 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 318 transitions. [2020-08-21 14:47:49,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:47:49,434 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 318 transitions. [2020-08-21 14:47:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 14:47:49,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:49,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:47:49,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:47:49,437 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:49,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:49,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1813365187, now seen corresponding path program 1 times [2020-08-21 14:47:49,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:49,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317383886] [2020-08-21 14:47:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,847 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:47:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:47:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 14:47:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:47:49,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317383886] [2020-08-21 14:47:49,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:49,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:47:49,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249919391] [2020-08-21 14:47:49,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:47:49,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:49,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:47:49,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:47:49,971 INFO L87 Difference]: Start difference. First operand 264 states and 318 transitions. Second operand 12 states. [2020-08-21 14:47:50,523 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:47:50,857 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:51,148 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:51,457 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:52,064 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:52,958 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:53,388 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:47:53,763 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:47:54,101 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:47:54,391 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:47:54,887 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:47:55,268 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:47:55,555 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:47:57,475 INFO L93 Difference]: Finished difference Result 1065 states and 1468 transitions. [2020-08-21 14:47:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 14:47:57,476 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 14:47:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:47:57,485 INFO L225 Difference]: With dead ends: 1065 [2020-08-21 14:47:57,486 INFO L226 Difference]: Without dead ends: 825 [2020-08-21 14:47:57,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 14:47:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-08-21 14:47:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 732. [2020-08-21 14:47:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-21 14:47:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 932 transitions. [2020-08-21 14:47:57,731 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 932 transitions. Word has length 57 [2020-08-21 14:47:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:47:57,732 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 932 transitions. [2020-08-21 14:47:57,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:47:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 932 transitions. [2020-08-21 14:47:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 14:47:57,737 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:57,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:47:57,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:47:57,737 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2128676035, now seen corresponding path program 1 times [2020-08-21 14:47:57,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:57,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787208977] [2020-08-21 14:47:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,032 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:58,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:47:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:47:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:47:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 14:47:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:47:58,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787208977] [2020-08-21 14:47:58,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:58,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:47:58,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137235414] [2020-08-21 14:47:58,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:47:58,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:47:58,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:47:58,134 INFO L87 Difference]: Start difference. First operand 732 states and 932 transitions. Second operand 6 states. [2020-08-21 14:47:58,551 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:00,424 INFO L93 Difference]: Finished difference Result 1759 states and 2407 transitions. [2020-08-21 14:48:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:48:00,425 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 14:48:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:00,435 INFO L225 Difference]: With dead ends: 1759 [2020-08-21 14:48:00,435 INFO L226 Difference]: Without dead ends: 1051 [2020-08-21 14:48:00,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:48:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-08-21 14:48:00,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 964. [2020-08-21 14:48:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-08-21 14:48:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1220 transitions. [2020-08-21 14:48:00,656 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1220 transitions. Word has length 61 [2020-08-21 14:48:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:00,656 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 1220 transitions. [2020-08-21 14:48:00,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:48:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1220 transitions. [2020-08-21 14:48:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 14:48:00,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:00,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:00,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:48:00,661 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:00,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1754610703, now seen corresponding path program 1 times [2020-08-21 14:48:00,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:00,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733166890] [2020-08-21 14:48:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,047 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:48:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 14:48:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:48:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:48:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 14:48:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 14:48:01,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733166890] [2020-08-21 14:48:01,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:01,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 14:48:01,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387064468] [2020-08-21 14:48:01,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:48:01,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:01,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:48:01,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:48:01,231 INFO L87 Difference]: Start difference. First operand 964 states and 1220 transitions. Second operand 10 states. [2020-08-21 14:48:01,969 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 14:48:02,573 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:04,489 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:06,540 INFO L93 Difference]: Finished difference Result 1865 states and 2457 transitions. [2020-08-21 14:48:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 14:48:06,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 14:48:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:06,550 INFO L225 Difference]: With dead ends: 1865 [2020-08-21 14:48:06,550 INFO L226 Difference]: Without dead ends: 1168 [2020-08-21 14:48:06,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-21 14:48:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-21 14:48:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1071. [2020-08-21 14:48:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-21 14:48:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1331 transitions. [2020-08-21 14:48:06,767 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1331 transitions. Word has length 88 [2020-08-21 14:48:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:06,769 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1331 transitions. [2020-08-21 14:48:06,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:48:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1331 transitions. [2020-08-21 14:48:06,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 14:48:06,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:06,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:06,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:48:06,778 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1977854615, now seen corresponding path program 1 times [2020-08-21 14:48:06,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:06,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183535574] [2020-08-21 14:48:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,114 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:48:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:48:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 14:48:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:48:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 14:48:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 14:48:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 14:48:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 14:48:07,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183535574] [2020-08-21 14:48:07,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:07,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 14:48:07,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231899868] [2020-08-21 14:48:07,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:48:07,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:07,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:48:07,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:48:07,320 INFO L87 Difference]: Start difference. First operand 1071 states and 1331 transitions. Second operand 10 states. [2020-08-21 14:48:08,468 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:08,752 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:48:09,042 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:09,321 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:10,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:10,330 INFO L93 Difference]: Finished difference Result 2259 states and 2935 transitions. [2020-08-21 14:48:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:48:10,331 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-21 14:48:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:10,342 INFO L225 Difference]: With dead ends: 2259 [2020-08-21 14:48:10,342 INFO L226 Difference]: Without dead ends: 1212 [2020-08-21 14:48:10,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:48:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-08-21 14:48:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1101. [2020-08-21 14:48:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-08-21 14:48:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1365 transitions. [2020-08-21 14:48:10,580 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1365 transitions. Word has length 130 [2020-08-21 14:48:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:10,581 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1365 transitions. [2020-08-21 14:48:10,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:48:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1365 transitions. [2020-08-21 14:48:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-21 14:48:10,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:10,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:10,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:48:10,587 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:10,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1002064467, now seen corresponding path program 1 times [2020-08-21 14:48:10,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:10,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459006248] [2020-08-21 14:48:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,889 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:10,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:48:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:48:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 14:48:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 14:48:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:48:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 14:48:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 14:48:11,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459006248] [2020-08-21 14:48:11,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:11,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:48:11,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60261598] [2020-08-21 14:48:11,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:48:11,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:48:11,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:48:11,120 INFO L87 Difference]: Start difference. First operand 1101 states and 1365 transitions. Second operand 12 states. [2020-08-21 14:48:12,023 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:12,298 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:12,547 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:13,238 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:13,538 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:13,809 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:14,960 INFO L93 Difference]: Finished difference Result 2069 states and 2643 transitions. [2020-08-21 14:48:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:48:14,961 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-21 14:48:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:14,968 INFO L225 Difference]: With dead ends: 2069 [2020-08-21 14:48:14,968 INFO L226 Difference]: Without dead ends: 992 [2020-08-21 14:48:14,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:48:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-08-21 14:48:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 936. [2020-08-21 14:48:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-08-21 14:48:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1136 transitions. [2020-08-21 14:48:15,203 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1136 transitions. Word has length 126 [2020-08-21 14:48:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:15,203 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1136 transitions. [2020-08-21 14:48:15,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:48:15,203 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1136 transitions. [2020-08-21 14:48:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 14:48:15,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:15,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:15,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:48:15,208 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:15,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1767310158, now seen corresponding path program 1 times [2020-08-21 14:48:15,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:15,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786804727] [2020-08-21 14:48:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,539 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:48:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:48:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:48:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 14:48:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 14:48:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 14:48:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 14:48:15,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786804727] [2020-08-21 14:48:15,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:15,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 14:48:15,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578562654] [2020-08-21 14:48:15,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:48:15,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:15,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:48:15,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:48:15,787 INFO L87 Difference]: Start difference. First operand 936 states and 1136 transitions. Second operand 13 states. [2020-08-21 14:48:16,312 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:17,095 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:19,275 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:19,566 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:19,843 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:20,106 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:20,401 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:20,671 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:20,939 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:21,204 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:21,502 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:21,798 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:22,589 INFO L93 Difference]: Finished difference Result 2701 states and 3404 transitions. [2020-08-21 14:48:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 14:48:22,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 14:48:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:22,600 INFO L225 Difference]: With dead ends: 2701 [2020-08-21 14:48:22,600 INFO L226 Difference]: Without dead ends: 1789 [2020-08-21 14:48:22,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 14:48:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-08-21 14:48:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1687. [2020-08-21 14:48:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-21 14:48:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2019 transitions. [2020-08-21 14:48:22,950 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2019 transitions. Word has length 130 [2020-08-21 14:48:22,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:22,952 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2019 transitions. [2020-08-21 14:48:22,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:48:22,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2019 transitions. [2020-08-21 14:48:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 14:48:22,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:22,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:22,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:48:22,958 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:22,959 INFO L82 PathProgramCache]: Analyzing trace with hash 941448042, now seen corresponding path program 1 times [2020-08-21 14:48:22,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:22,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951481184] [2020-08-21 14:48:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,324 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:23,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:48:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:48:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:48:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 14:48:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:48:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 14:48:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 14:48:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 14:48:23,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951481184] [2020-08-21 14:48:23,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:23,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 14:48:23,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443233006] [2020-08-21 14:48:23,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:48:23,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:48:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:48:23,548 INFO L87 Difference]: Start difference. First operand 1687 states and 2019 transitions. Second operand 11 states. [2020-08-21 14:48:24,084 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:26,321 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:26,605 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:26,950 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:27,259 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:27,557 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:28,254 INFO L93 Difference]: Finished difference Result 1997 states and 2554 transitions. [2020-08-21 14:48:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 14:48:28,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-21 14:48:28,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:28,268 INFO L225 Difference]: With dead ends: 1997 [2020-08-21 14:48:28,268 INFO L226 Difference]: Without dead ends: 1994 [2020-08-21 14:48:28,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-21 14:48:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-08-21 14:48:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1687. [2020-08-21 14:48:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-21 14:48:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2009 transitions. [2020-08-21 14:48:28,674 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2009 transitions. Word has length 134 [2020-08-21 14:48:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:28,674 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2009 transitions. [2020-08-21 14:48:28,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:48:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2009 transitions. [2020-08-21 14:48:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 14:48:28,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:28,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:28,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:48:28,681 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:28,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:28,681 INFO L82 PathProgramCache]: Analyzing trace with hash 108116472, now seen corresponding path program 1 times [2020-08-21 14:48:28,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:28,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867036628] [2020-08-21 14:48:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,013 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:48:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:48:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:48:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 14:48:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 14:48:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 14:48:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 14:48:29,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867036628] [2020-08-21 14:48:29,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:29,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:48:29,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110771737] [2020-08-21 14:48:29,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:48:29,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:29,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:48:29,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:48:29,325 INFO L87 Difference]: Start difference. First operand 1687 states and 2009 transitions. Second operand 12 states. [2020-08-21 14:48:29,821 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:30,732 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:31,058 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:31,349 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:31,626 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:31,910 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:32,306 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:33,113 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:33,431 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:33,718 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:36,008 INFO L93 Difference]: Finished difference Result 4159 states and 5274 transitions. [2020-08-21 14:48:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 14:48:36,009 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-21 14:48:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:36,026 INFO L225 Difference]: With dead ends: 4159 [2020-08-21 14:48:36,027 INFO L226 Difference]: Without dead ends: 2806 [2020-08-21 14:48:36,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 14:48:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-08-21 14:48:36,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2479. [2020-08-21 14:48:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-08-21 14:48:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3004 transitions. [2020-08-21 14:48:36,535 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3004 transitions. Word has length 134 [2020-08-21 14:48:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:36,537 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3004 transitions. [2020-08-21 14:48:36,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:48:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3004 transitions. [2020-08-21 14:48:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-21 14:48:36,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:36,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:36,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:48:36,552 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:36,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:36,552 INFO L82 PathProgramCache]: Analyzing trace with hash -116138867, now seen corresponding path program 2 times [2020-08-21 14:48:36,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:36,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953453086] [2020-08-21 14:48:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:48:36,672 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:48:36,672 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:48:36,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 14:48:36,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:48:36 BoogieIcfgContainer [2020-08-21 14:48:36,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:48:36,739 INFO L168 Benchmark]: Toolchain (without parser) took 58087.97 ms. Allocated memory was 140.0 MB in the beginning and 843.6 MB in the end (delta: 703.6 MB). Free memory was 102.3 MB in the beginning and 238.1 MB in the end (delta: -135.7 MB). Peak memory consumption was 567.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:36,743 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-21 14:48:36,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.49 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.9 MB in the beginning and 171.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:36,745 INFO L168 Benchmark]: Boogie Preprocessor took 89.63 ms. Allocated memory is still 202.4 MB. Free memory was 171.8 MB in the beginning and 167.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:36,748 INFO L168 Benchmark]: RCFGBuilder took 1131.48 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 166.8 MB in the beginning and 196.6 MB in the end (delta: -29.8 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:36,752 INFO L168 Benchmark]: TraceAbstraction took 56130.09 ms. Allocated memory was 236.5 MB in the beginning and 843.6 MB in the end (delta: 607.1 MB). Free memory was 196.6 MB in the beginning and 238.1 MB in the end (delta: -41.4 MB). Peak memory consumption was 565.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:36,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.49 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.9 MB in the beginning and 171.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.63 ms. Allocated memory is still 202.4 MB. Free memory was 171.8 MB in the beginning and 167.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1131.48 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 166.8 MB in the beginning and 196.6 MB in the end (delta: -29.8 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 56130.09 ms. Allocated memory was 236.5 MB in the beginning and 843.6 MB in the end (delta: 607.1 MB). Free memory was 196.6 MB in the beginning and 238.1 MB in the end (delta: -41.4 MB). Peak memory consumption was 565.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int pumpRunning = 0; [L525] int systemActive = 1; [L728] int waterLevel = 1; [L729] int methaneLevelCritical = 0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L450] int splverifierCounter ; [L451] int tmp ; [L452] int tmp___0 ; [L453] int tmp___1 ; [L454] int tmp___2 ; [L457] splverifierCounter = 0 [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND TRUE \read(tmp) [L471] CALL waterRise() [L746] COND TRUE waterLevel < 2 [L747] waterLevel = waterLevel + 1 [L471] RET waterRise() [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND FALSE !(\read(pumpRunning)) [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND FALSE !(\read(pumpRunning)) [L605] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND TRUE ! pumpRunning [L566] CALL, EXPR isHighWaterLevel() [L684] int retValue_acc ; [L685] int tmp ; [L686] int tmp___0 ; [L690] CALL, EXPR isHighWaterSensorDry() [L808] int retValue_acc ; [L811] COND FALSE !(waterLevel < 2) [L815] retValue_acc = 0 [L816] return (retValue_acc); [L690] RET, EXPR isHighWaterSensorDry() [L690] tmp = isHighWaterSensorDry() [L692] COND FALSE !(\read(tmp)) [L695] tmp___0 = 1 [L697] retValue_acc = tmp___0 [L698] return (retValue_acc); [L566] RET, EXPR isHighWaterLevel() [L566] tmp = isHighWaterLevel() [L568] COND TRUE \read(tmp) [L570] CALL activatePump() [L615] pumpRunning = 1 [L570] RET activatePump() [L605] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) [L547] RET __utac_acc__Specification4_spec__1() [L504] RET timeShift() [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND TRUE \read(pumpRunning) [L534] CALL lowerWaterLevel() [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L534] RET lowerWaterLevel() [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L592] CALL, EXPR isMethaneAlarm() [L628] int retValue_acc ; [L632] CALL, EXPR isMethaneLevelCritical() [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] RET, EXPR isMethaneLevelCritical() [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] RET, EXPR isMethaneAlarm() [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L600] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L579] FCALL processEnvironment__wrappee__base() [L600] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) [L547] RET __utac_acc__Specification4_spec__1() [L504] RET timeShift() [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND TRUE \read(pumpRunning) [L534] CALL lowerWaterLevel() [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L534] RET lowerWaterLevel() [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L592] CALL, EXPR isMethaneAlarm() [L628] int retValue_acc ; [L632] CALL, EXPR isMethaneLevelCritical() [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] RET, EXPR isMethaneLevelCritical() [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] RET, EXPR isMethaneAlarm() [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L600] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L579] FCALL processEnvironment__wrappee__base() [L600] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND TRUE tmp == 0 [L928] CALL, EXPR isPumpRunning() [L639] int retValue_acc ; [L642] retValue_acc = pumpRunning [L643] return (retValue_acc); [L928] RET, EXPR isPumpRunning() [L928] tmp___0 = isPumpRunning() [L930] COND TRUE \read(tmp___0) [L932] CALL __automaton_fail() [L722] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 56.0s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 46.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1441 SDtfs, 3438 SDslu, 1744 SDs, 0 SdLazy, 10735 SolverSat, 2370 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 355 SyntacticMatches, 7 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2479occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 1299 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 1189 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 993 ConstructedInterpolants, 0 QuantifiedInterpolants, 354814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 128/147 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...